Dc converter valve state detection method based on temporal features of converter terminal currents
US-2022397615-A1 · Dec 15, 2022 · US
Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66)
Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01R31/56 |
| Official title | Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66) |
| Display label | Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66) |
| Total patents | 254 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 17 |
| 2021 | 27 |
| 2022 | 59 |
| 2023 | 42 |
| 2024 | 52 |
| 2025 | 45 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Current measuring circuit for a converter, converter circuit and converter
US-2022376601-A1 · Nov 24, 2022 · US
Display device, display driver, and failure inspection method
US-11508280-B2 · Nov 22, 2022 · US
Diagnostic apparatus for secondary battery and SOC unevenness detection method
US-11469456-B2 · Oct 11, 2022 · US
Display device, display driver, and failure inspection method
US-2022319375-A1 · Oct 6, 2022 · US
In situ data acquisition and real-time analysis system
US-11435269-B1 · Sep 6, 2022 · US
Diagnostic apparatus
US-11293997-B2 · Apr 5, 2022 · US
Fault detection in hybrid DC-DC power convertors
US-11293992-B2 · Apr 5, 2022 · US
Solar power generation fault diagnosis device and solar power generation fault diagnosis method
US-11290056-B2 · Mar 29, 2022 · US
Detecting anomalies in a plurality of showcases
US-11280816-B2 · Mar 22, 2022 · US
Prognostic health management for power devices
US-2021407870-A1 · Dec 30, 2021 · US
Display panel and display device
US-11199573-B2 · Dec 14, 2021 · US
Failure diagnostic device
US-11193986-B2 · Dec 7, 2021 · US
Short circuit detection and protection for a gate driver circuit and methods of detecting the same using logic analysis
US-11183835-B2 · Nov 23, 2021 · US
Systems and methods for detecting local oscillator leakage and image tone in I/Q mixer based transceivers
US-11171609-B2 · Nov 9, 2021 · US
Integrated interface and electronic device
US-11132144-B2 · Sep 28, 2021 · US
Fault diagnosis method and system for high-voltage generator
US-2021293885-A1 · Sep 23, 2021 · US
Image sensor with voltage buffer for self-test
US-11122259-B2 · Sep 14, 2021 · US
Monitoring apparatus and system for an ionizer
US-2021263110-A1 · Aug 26, 2021 · US
Image Sensor With Voltage Buffer For Self-Test
US-2021258563-A1 · Aug 19, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01R31/56?
- CPC G01R31/56 is the Cooperative Patent Classification code for “Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66).”
- How many patents are filed under CPC G01R31/56 (Testing of electric apparatus (testing of transformers G01R31/62; testing of connections G01R31/66))?
- Our database includes 254 publications tagged with this CPC code.
- Is patent activity under CPC G01R31/56 growing?
- Publication counts under this code: 52 in 2024 vs 45 in 2025 (latest complete years).